The capillaries on the hands are relatively thin. If you are an ordinary person, many people will grow thinner in the process of growth and development. There is nothing special about it. This may be the development of the surrounding hair vessels, and will not cause any great harm to the body. The second is some elderly people. For example, when the blood circulation is poor or the nutritional status of the body is poor, when the vascular wall collapses, the blood will not flow smoothly, and then it will be difficult to inject or draw blood. Then sometimes it is necessary to use some vein ports, or deep vein catheters, which are large veins, to apply to this aspect. Therefore, if we talk about ordinary people, their development may not be abnormal. The second is that they are in poor condition and drink less water. When the effective blood volume is relatively low, it will lead to insufficient perfusion of blood vessels around the surrounding organs, which will relatively cause one of the blood vessels to become thinner or narrower.
